1.) Is it possible to design a better stop sign?
2.) Sacrilege: One Scottish distillery uses whisky to generate renewable energy.
3.) The E.P.A. takes a tougher stance on factory farming.
4.) Brilliant: A Good Company gives IRS.gov a Mint.com-like redesign.
5.) The Earth's mantle is moving 20 to 30 times faster than previously thought, leaving more available energy for earthquakes.
This post was originally published on Smartplanet.com